Four stoves in China

The four major cities in China are Chongqing, Changsha, Wuhan and Nanchang.

Sizao refers to the four hottest cities in China, and is the name of the four hottest cities in China in summer, which are generally concentrated in the Yangtze River basin in southern China and Huanghuai area in northern China.

It first started in the Republic of China, when Chongqing, Wuhan, Nanchang, Changsha and other places in the upper, middle and lower reaches of the Yangtze River were hot in summer, so it was called "four stoves". With the change of climate and the migration of weather stations, the list of cities is also changing.

The word "stove" first reflected the intuitive feelings of the public, and there was no clear definition and standard for a long time. After 2 1 century, the furnace city began to take heat index, high temperature days, continuous high temperature days, summer average maximum temperature and minimum temperature as consideration factors.

Direct feeling

The idea of "stove" city originated from the people and has no meteorological and statistical basis. The word "stove" reflects the intuitive feelings of the public, but there has been no clear definition and standard. For example, there are many hot days in northern cities, but the relative humidity is not big, and the human body comfort is much better.

In some cities, the extreme maximum temperature is very high, but the duration is not long, and the overall heat degree is not necessarily the highest; Some cities have high relative humidity in summer, but the highest temperature is not very high. Although the human body feels sultry, the heat intensity is not strong. Of course, the human body's feeling of heat is also related to people's physical condition and adaptability to the environment.